.w100{
    width: 100%;
}

.h100{
    height: 100%;
}

.content{
    width: 1200px;
    margin: auto;
}

.flex{
    display: flex;
}

.flex-1{
    flex: 1;
}

.flex-jc-between{
    display: flex;
    justify-content: space-between;
}

.flex-jc-center{
    display: flex;
    justify-content: space-between;
}

.flex-ai-center{
    display: flex;
    align-items: center;
}

.flex-jc-end{
    display: flex;
    justify-content: end;
}

.flex-column{
    display: flex;
    flex-direction: column;
}

.flex-ai-jc-center{
    display: flex;
    align-items: center;
    justify-content: center;
}

.flex-end{
    display: flex; 
    justify-content: flex-end;
}